2005-2014 Mustang Frequently Asked Questions
• Should I replace my stock driveshaft?
• Do tune required cold air intakes work?
• Are hot air and heat soak an issue for cold air intakes?
• Rare computer tuning and tuners worth it?
• Do aftermarket parts void your OEM warranty?
• What are the flat spots and indentations on the OEM exhaust?
• Does the V6 Mustang use adaptive timing control?
Putting an aftermarket driveshaft on my 2005-2014 Mustang, is it a good idea?
With the 2005 Mustang redesign, Ford changed from the previous one piece driveshaft with a slip spline yoke in the transmission, to a two piece shaft with flanges mounted on both the axle and transmission. The GT and GT500 using a similar driveshaft that is comprised of two short shafts with a carrier support bearing in the center between the two shafts, one u-joint at the front and CV joints on either end of the rear shaft. On the V6, the two piece shaft has no center bearing, instead, the two pieces slid together in the center to provide for the axle articulation and it has u-joints on each end. Of the two designs the V6 driveshaft is the weakest unit by far and is the reason why Ford has such a low speed limiter setting for the V6 cars and there have been a number of failures of over-stressed OEM drive shafts. The GT and GT500 shafts are actually quite strong and capable of relatively high sustained speeds. The worst thing about the GT and GT500 shafts is the weight, they are heavy. In the 2013 model GT500 this has been addressed by the use of carbon fiber material for the driveshaft tubing, as well as making them suitable for the 200 MPH speeds the GT500 is now capable of.
If you have a 2005+ v6 Mustang, you are definitely going to want to replace your driveshaft with a stronger, lighter aftermarket model. For GT and GT500 owners, a replacement driveshaft is going to reduce weight and vibration while helping the car rev smoother and faster.
Many manufacturers offer aluminum replacement drive shafts to replace the weak and heavy OEM parts.
No tune required cold air intakes for Mustangs, do they work?
Yes. While the peak horsepower numbers may not rise a lot with their use, the power and torque numbers along the power curve generally rise significantly.
Mustang Cold Air Intakes: hot air and heat soak, is it really an issue?
This has been a long time question, ever since Mustang CAIs first started showing up on the market. These two issues are really only prevalent at idle so they have little effect on power production. Once the RPM and speed start to climb and the air starts to really flow through the CAI, all those increased temps are left behind.
Aftermarket manufacturers offer a variety of Mustang cold air intakes to suit your needs.
Aftermarket Mustang computer tuning & tuners, are they worth it?
Absolutely! The OEM tunes are very conservative and definitely leave a lot to be improved upon. Automatic equipped Mustangs reap even more benefit from tuning as the computer controls transmission functions.
Do aftermarket parts void your OEM warranty?
The quick answer is “maybe.” An aftermarket part only voids the warranty if it can be proved that the part directly caused the problem you are looking to get fixed. So, if you replace your exhaust and the driveshaft breaks you are still covered, but if the hangers for your new exhaust break or bend from install, you will not be covered.
If you are concerned about an aftermarket part or tune voiding your warranty, the best resource for accurate information can be found by directly calling your local Ford dealership and simply asking.
What are the flat spots and indentations on the Mustang's OEM exhaust?
The stock exhaust system has areas in it that have been flattened. These flat spots are there for the machinery to clamp onto during production and can inhibit airflow, robbing you of power and performance. Replacing your Mustang’s OEM exhaust with an aftermarket exhaust will greatly increase airflow and afford you big power gains.
Does the V6 Mustang use adaptive timing control?
Both the current V6 Mustang and the GT Mustang use adaptive timing control. This advances the timing until the knock sensors hear pinging, at which point the timing is retarded slightly. What this means is that using a higher octane fuel allows the engine to make more power without added wear to the motor.